US20130101779A1 - Vacuum insulation material - Google Patents

Vacuum insulation material Download PDF

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Publication number
US20130101779A1
US20130101779A1 US13/805,253 US201113805253A US2013101779A1 US 20130101779 A1 US20130101779 A1 US 20130101779A1 US 201113805253 A US201113805253 A US 201113805253A US 2013101779 A1 US2013101779 A1 US 2013101779A1
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United States
Prior art keywords
layer
outer circumferential
wrapping member
metalized
core material
Prior art date
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Abandoned
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US13/805,253
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English (en)
Inventor
Jaehyun SOH
Ilseob Yoon
Youngbae Kim
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LG Electronics Inc
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LG Electronics Inc
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Filing date
Publication date
Priority claimed from KR1020100081672A external-priority patent/KR20120021948A/ko
Priority claimed from KR1020100094789A external-priority patent/KR20120033168A/ko
Priority claimed from KR1020100094788A external-priority patent/KR20120033167A/ko
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YOON, ILSEOB, Soh, Jaehyun, KIM, YOUNGBAE
Publication of US20130101779A1 publication Critical patent/US20130101779A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2201/00—Insulation
    • F25D2201/10—Insulation with respect to heat
    • F25D2201/14—Insulation with respect to heat using subatmospheric pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/231—Filled with gas other than air; or under vacuum

Definitions

  • the present disclosure relates to a vacuum insulation material for a refrigerator, and more particularly, a vacuum insulation material having an excellent insulation characteristic, less affected by heat bridge, which may be generated at bonded portions at edges of the vacuum insulation material, by optimizing material and structure of a wrapping member of the vacuum insulation material.
  • a refrigerator is an apparatus for storing foods at low temperature, and includes a cabinet defining storage spaces, such as a refrigerating chamber, a freezing chamber or the like for storing foods, doors for opening or closing the refrigerating chamber and the freezing chamber, and a machine part having a refrigerant compression cycle.
  • the cabinet referring to FIG. 1 , is generally configured such that an insulation material is filled between an outer surface 10 defining its appearance and an inner surface 20 defining the storage spaces to enhance cooling efficiency.
  • a polyurethane foam 30 is injected and foamed between the inner surface 20 and the outer surface 10 in an assembled state as shown in FIG. 2 .
  • the polyurethane foam 30 contains air therein, which causes limitation in view of improving its insulation efficiency.
  • an insulation structure having an improved insulation function is employed. Namely, a vacuum insulation material 40 as well as the portion formed by the polyurethane foam 30 are employed between the outer surface 10 and the inner surface 20 of the cabinet. In other words, the polyurethane foam and the vacuum insulation material are positioned sequentially from the inner surface.
  • the vacuum insulation material 40 includes a core material 41 formed by laminating panels formed of glass fibers and silica, and present in a vacuum state, and a wrapping member 42 for wrapping the core material 41 to maintain the vacuum state of the core material 41 .
  • the core material 41 is formed of glass fibers
  • getters 43 is often included in the wrapping member 42 to remove gas components introduced into the wrapping member 42 .
  • the getter is not required when the silica is used as the core material 41 .
  • the wrapping member 42 is a constituting element in a shape of envelope, which is formed by laminating various materials, and accommodates the core material 41 therein.
  • the wrapping member 42 has a structure of interposing an aluminum foil 42 b between polymer films 42 a and 42 c to prevent permeation of humidity and gas.
  • the edge portions 44 of the wrapping member 42 are thermally bonded such that the inside of the wrapping member 42 is maintained in a vacuum state, and the bonded portions are folded.
  • the insulation may be achieved by the core material 41 .
  • the core material 41 is not present at the folded portions after bonded, heat transfer by the aluminum foil cannot happen. That is, upon use of the aluminum foil in the wrapping member, since the aluminum foil is metallic, the insulation effect is less than that at the portion where the core material is present, thereby causing heat bridge that heat is transferred internally.
  • an aspect of the detailed description is to provide a vacuum insulation material capable of improving insulation efficiencies of edge portions of the vacuum insulation material where heat bridge is caused, and simultaneously maintaining the insulation efficiency at a portion where a core material is present.
  • Another aspect of this specification is to provide a vacuum insulation material having excellent insulation efficiency by virtue of an improved insulation characteristic at edge portions of the vacuum insulation material, at which heat bridge is caused, even with aluminum foil used.
  • a vacuum insulation material in accordance with a first exemplary embodiment may include a core material, and a wrapping member configured to wrap the core material, wherein the wrapping member may include an outermost layer externally exposed, a barrier layer located beneath the outermost layer and having at least two laminated polymer layers, each polymer layer having an inorganic layer metalized thereon, and a thermal bonding layer located beneath the barrier layer and contacting the core material, wherein the inorganic layers metalized on the polymer layers, respectively, are separated from each other, at least one of the inorganic layers being more than 600 ⁇ in thickness.
  • Each of the inorganic layers may be configured to have an oxygen transmission rate (OTR) less than 1.5 cc/m 2 ⁇ atm ⁇ day, which is measured under ASTM D3958 condition using 760 mmHg (1 atm) of 100% oxygen at one side and 760 mmHg (1 atm) of 100% nitrogen at the other side at temperature of 23° C. and 50% relative humidity.
  • OTR oxygen transmission rate
  • the inorganic layers may be formed by vacuum-Al metalizing.
  • a plurality of metalized inorganic layers may be laminated between the outermost layer and the thermal bonding layer of the wrapping member to allow for sufficient insulation and humidity shielding even without use of aluminum foil, and simultaneously improve insulation efficiencies at edge portions of the wrapping member so as to minimize heat bridge.
  • the metalizing may cause a layer or film to be thinner than a coated foil so as to be vulnerable to air and moisture permeation. Therefore, at least one of the inorganic layer may be formed with a thickness more than 600 ⁇ so as to make up for the function as a barrier layer.
  • At least one of the polymer layers may be ethylene vinylalcohol (EVOH), and at least a polymer layer adjacent to the outermost layer may be polyester (PET).
  • EVOH ethylene vinylalcohol
  • PET polyester
  • At least one of the polymer layers may be polyester (PET), and at least a polymer layer adjacent to the outermost layer may be ethylene vinylalcohol (EVOH).
  • PET polyester
  • EVOH ethylene vinylalcohol
  • the outermost layer may be made of nylon, and the thermal bonding layer may be linear low density polyethylene (LLDPE).
  • LLDPE linear low density polyethylene
  • Each of the inorganic layers may be configured to have an oxygen transmission rate (OTR) less than 1.5 cc/m 2 ⁇ atm ⁇ day, which is measured under ASTM D3958 condition using 760 mmHg (1 atm) of 100% oxygen at one side and 760 mmHg (1 atm) of 100% nitrogen at the other side at temperature of 23° C. and 50% relative humidity.
  • OTR oxygen transmission rate
  • Each of the metalized films may further include an adhesive layer.
  • the reinforcing foil may be coupled onto an outer surface or an inner surface of the wrapping member.
  • the reinforcing foil may be laminated within the laminate films.
  • the wrapping member may have a shape of envelope formed by thermally bonding outer circumferential portions of a pair of laminate films so as to accommodate the core material therein, wherein the wrapping member may further include a reinforcing foil disposed on an overlapped portion between the core material and the wrapping member.
  • a vacuum insulation material which includes a wrapping member having a shape of envelope formed by thermally bonding outer circumferential portions of a pair of laminated films so as to accommodate a core material, similar to the configuration of the second exemplary embodiment, may further include reinforcing foils coupled onto the laminated films, wherein outer circumferential portions of each side surface defining edges of the envelope shape may be provided with the reinforcing foil only on a surface of one of the pair of laminate films.
  • the folded outer circumferential portions of each side surface of the wrapping member when the outer circumferential portions of each side surface of the wrapping member are folded by predetermined intervals toward the laminate film having the reinforcing foil, the folded outer circumferential portions of each side surface may be wrapped by the laminate film only having a metalized film, on which the inorganic layer is metalized, such that the laminate film having the reinforcing foil cannot be exposed to the exterior.
  • one of the two laminate films forming the wrapping member may not be provided with the reinforcing foil and the laminate film without the reinforcing foil may wrap the laminate film with the reinforcing foil, thereby avoiding heat bridge generated at the outer circumferential portions as much as possible.
  • the pair of laminate films may include a first surface defined as an upper surface and a second surface defined as a lower surface, and when the reinforcing foil is disposed only on upper and lower outer circumferential portions of the first surface on a planar surface, the reinforcing foil may be disposed only on left and right outer circumferential portions of the second surface.
  • the pair of laminate films may include a first surface defined as an upper surface and a second surface defined as a lower surface, and when the reinforcing foil is disposed only on left and right outer circumferential portions of the first surface on a planar surface, the reinforcing foil may be disposed only on upper and lower outer circumferential portions of the second surface.
  • a plurality of metalized inorganic layers may be laminated between the outermost layer and the thermal bonding layer of the wrapping member to allow for sufficient insulation and humidity shielding even without use of aluminum foil, and simultaneously improve insulation efficiencies at edge portions of the wrapping member so as to minimize heat bridge.
  • the outer circumferential portion of the wrapping member which is formed by the pair of laminate films, only has the laminate films each including the metalized film having the inorganic layer, without the reinforcing foil, thereby minimizing or preventing heat bridge generated at the outer circumferential portions.
  • the metalized inorganic layer can be interposed between the outermost layer and the thermal bonding layer of the wrapping member to allow for sufficient insulation and moisture shielding even if partially not using an aluminum foil, and also improve insulation efficiencies at the outer circumferential portions of the wrapping member as the edge portions, thereby avoiding heat bridge.
  • one of the two laminate films forming the wrapping member may not be provided with the reinforcing foil and the laminate film without the reinforcing foil may wrap the laminate film with the reinforcing foil, thereby avoiding heat bridge generated at the outer circumferential portions.
  • FIG. 1 is a perspective view of a general refrigerator
  • FIGS. 2 and 3 are sectional views showing an outer wall of the general refrigerator
  • FIG. 4 is a sectional view of a vacuum insulation material according to the related art
  • FIG. 5 is a partial perspective view of a wrapping member according to the related art
  • FIG. 8 is a schematic view showing heat transfer measurement points for the vacuum insulation material
  • FIG. 9 is a graph showing comparison results of heat transfer coefficients measured at each point of FIG. 8 ;
  • FIGS. 11 to 13 show different variations of the third exemplary embodiment
  • FIGS. 14 and 15 are partial sectional views of the third exemplary embodiment
  • FIGS. 16 and 17 are planar views showing a vacuum insulation material in accordance with a fourth exemplary embodiment.
  • FIG. 18 is a planar view showing a coupled state of a wrapping member shown in FIG. 16 .
  • the core material 110 may be made of glass fiber, which is well-known as a material having an excellent insulation characteristic.
  • the core material 110 may be formed by laminating panels woven from the glass fibers so as to obtain a high insulation effect.
  • the core material 110 may alternatively employ silica.
  • the silica is superior to the glass fiber in the aspect of long-term reliability, by virtue of less change in performance even after extended use.
  • the wrapping member 100 may include the outermost layer 120 , the barrier layer 130 and the thermal bonding layer 140 .
  • the wrapping member 100 may maintain a vacuum state of the core material 110 and function to protect the core material 110 .
  • the outermost layer 120 may be formed to be exposed to an outer surface of the vacuum insulation material.
  • the outermost layer 120 may be formed of nylon.
  • the nylon is a material having high elasticity, accordingly, use of the nylon may prevent the vacuum insulation material from being destroyed even due to an external impact, which may be generated during assembly or installation of the vacuum insulation material.
  • the vacuum insulation material for a refrigerator is fabricated with a considerable size for improving efficiency, it may be possible to prevent in advance the vacuum insulation material from being defective during work or destroyed or damaged due to an external impact or scratch, by virtue of the outermost layer 120 formed of nylon.
  • the thermal bonding layer 140 is a portion where edge portions of the wrapping member 100 without the core material 110 are thermally bonded after accommodating the core material 110 therein to shield the inside of the wrapping member 100 .
  • the thermal bonding layer 140 may be made of linear low density polyethylene (LLDPE).
  • LLDPE linear low density polyethylene
  • the LLDPE may be medium-pressure polyethylene or low-pressure polyethylene. Its molecular structure is similar to high density polyethylene and its density is similar to low density polyethylene, generally 0.915 to 0.965.
  • the LLDPE exhibits relatively high melt viscosity, and rigidity or environmental stress crack resistance and tear strength about twice higher than those of the low-density polyethylene, so it may be suitable to form the thermal bonding layer 140 .
  • the barrier layer 130 may be formed between the outermost layer 120 and the thermal bonding layer 140 .
  • the barrier layer 130 may be constructed by laminating at least two polymer layers 132 a and 132 b , which have inorganic layers 131 a and 131 b metalized thereon, respectively.
  • the inorganic layers 131 a and 131 b may be separated from each other due to being metalized on the respective polymer layers 132 a and 132 b .
  • the metalized inorganic layers 131 a and 131 b may be thinner than a coated foil, accordingly, it may be vulnerable to permeation of air and moisture.
  • at least one of the metalized inorganic layers 131 a and 131 b may be more than 600 in thickness, so as to make up for the function as a barrier layer.
  • oxygen transmission rate should satisfy a predetermined standard under a minimal standard for the wrapping member of the vacuum insulation material.
  • the OTR refers to a value measured on the basis of ASTM D3958 condition. That is, the inorganic layers are configured to have the OTR less than 1.5 cc/m 2 ⁇ atm ⁇ day, which is measured under ASTM D3958 condition using 760 mmHg (1 atm) of 100% oxygen at one side and 760 mmHg (1 atm) of 100% nitrogen at the other side at temperature of 23° C. and 50% relative humidity.
  • the inorganic layers 131 a and 131 b may be made of aluminum, and metalized on the polymer layers 132 a and 132 b , respectively, to be separated from each other. Therefore, at least one polymer layer may be interposed between the inorganic layers 131 a and 131 b .
  • the metalizing may be implemented by metalizing aluminum on the polymer layer through vacuum-Al metalizing.
  • a plurality of metalized inorganic layers may be laminated between the outermost layer and the thermal bonding layer of the wrapping member to allow for sufficient insulation and humidity shielding even without use of aluminum foil. That is, a plurality of thin films each having aluminum laminated thereon, other than the aluminum foil, may be used to allow for insulation and shielding. Accordingly, the metallization of the inorganic layers in form of thin film may decrease heat bridge at edge portions of the vacuum insulation material, caused due to use of a thick metal such as the aluminum foil, thereby improving insulation efficiencies the edge portions. Also, insulation and shielding effects may also be achieved even at the central portion of the vacuum insulation material which should be insulated.
  • FIG. 6 shows the example that two polymer layers stacked each other.
  • the inorganic layers 131 a and 131 b are metalized on the polymer layers 132 a and 132 b , respectively.
  • the polymer layers 132 a and 132 b may be made of ethylene vinylalcohol (EVOH) or polyester (PET). Since the EVOH has an alcohol group with strong polarity, it has a high intermolecular force and accordingly can have low oxygen permeability. However, the EVOH is hydrophilic, thus it is sensitive to water. Therefore, this exemplary embodiment may use the EVOH together with the PET.
  • the PET has a relatively good permeability. Also, the PET is excellent in view of moisture vapor permeability and relative cheap cost, compared to the EVOH.
  • the polymer layers 132 a and 132 b may be configured as follows in the aforementioned aspect. At least one of the polymer layers may be EVOH, and at least one of the polymer layers adjacent to the outermost layer may be PET. With this configuration, even when employing the EVPOH polymer layer with hydrophilicity, it may exhibit an excellent characteristic in view of moisture vapor permeability.
  • At least one of the polymer layers may be PET, and at least one of the polymer layers contacting the thermal bonding layer may be EVOH.
  • the EVOH polymer layer having an excellent characteristic in view of the oxygen transmission rate may finally form the barrier layer, thereby improving reliability for maintaining the vacuum state within the wrapping member.
  • FIG. 6 shows the example that one PET polymer layer 132 a on which an aluminum layer is metalized is laminated on one EVOH polymer layer 132 b on which aluminum layer is metalized.
  • this specification may not be limited to the example, but be applicable to another example of having a plurality of polymer layers laminated one another. The another example is shown in FIG. 7 .
  • FIG. 7 shows that two or more polymer layers are laminated one another.
  • at least one film, which contacts the thermal bonding layer, of the polymer layers may preferably be an EVOH layer.
  • the polymer layers sequentially laminated on the EVOH layer may be PET polymer layers each having an aluminum layer metalized thereon. This structure may be beneficial in view of prevention of moisture permeation and reduction of fabrication cost.
  • FIG. 8 shows a test of measuring heat transfer at each point of the vacuum insulation material in a refrigerator having the vacuum insulation material.
  • a point A indicates a portion merely having polyurethane foam without the vacuum insulation material at an outer wall of a refrigerator cabinet
  • a point B indicates an edge portion of the vacuum insulation material
  • a point C indicates a portion adjacent to the edge portion of the vacuum insulation material
  • a point D indicates a portion, which is not affected by heat bridge due to being spaced apart to some degree from the edge portion of the vacuum insulation portion.
  • FIG. 9 shows heat transmittance each point of FIG. 8 .
  • the test has been carried out to show the amount of heat flowing by heat conductivity when applying the vacuum insulation material according to the present disclosure and the related art vacuum insulation material using the aluminum foil to a refrigerator, respectively, under a state that the inside is at low temperature and the outside is at high temperature.
  • a value measured at each point is expressed by K-Factor(K-value*10 4 ) and a unit is kcal/m ⁇ h ⁇ ° C.
  • a point A is a portion merely having the polyurethane foam, so a value of about 170 kcal/m ⁇ h ⁇ ° C. is measured as a common measurement.
  • a point which is the most concentrated on in this exemplary embodiment is the point B.
  • the outer wall of the refrigerator cabinet has an insulation structure which includes the polyurethane foam and the vacuum insulation material. Accordingly, the transfer ratios of heat, which is transferred through the polyurethane foam and the vacuum insulation material, have been measured at the point B.
  • K values when the insulation structure of the refrigerator cabinet is formed by laminating the vacuum insulation material according to the present disclosure or the related art vacuum insulation material and the polyurethane foam K value of about 150 kcal/m ⁇ h ⁇ ° C. has been measured when laminating the vacuum insulation material according to the present disclosure and the polyurethane foam, whereas K value of about 180 kcal/m ⁇ h ⁇ ° C.
  • K value of about 100 kcal/m ⁇ h ⁇ ° C. has been measured when using the vacuum insulation material according to the present invention together with the polyurethane foam, while K value of about 95 kcal/m ⁇ h ⁇ ° C. has been measured when using the related art vacuum insulation material together with the polyurethane foam.
  • a vacuum insulation material may include a core material and a wrapping member covering the core material.
  • the wrapping member may include an outermost layer externally exposed, at least two metalized films located beneath the outermost layer and having inorganic layers metalized thereon, respectively, and a thermal bonding layer located beneath the metalized films and contacting the core material.
  • the inorganic layers may be metalized on the metalized films, respectively, so as to be separated from each other. At least one of the inorganic layers may be more than 600 in thickness.
  • the second exemplary embodiment is similar to the first exemplary embodiment, so it will be described with reference to FIGS. 6 to 9 .
  • the inorganic layers are configured to have the OTR less than 1.5 cc/m 2 ⁇ atm ⁇ day, which is measured under ASTM D3958 condition using 760 mmHg (1 atm) of 100% oxygen at one side and 760 mmHg (1 atm) of 100% nitrogen at the other side at temperature of 23° C. and 50% relative humidity.
  • the metalized film may be formed by metalizing an aluminum layer on a film through vacuum-Al metalizing. It is not very different from the polymer layer having the aluminum layer metalized. Here, it is slightly different from the polymer layer in the aspect of being implemented as the metalized film. Other structure is not different from the first exemplary embodiment, so detailed description will be omitted.
  • At least one of the metalized films may be configured to have an inorganic layer, which is more than 600 in thickness.
  • the metalized films may be laminated each other with bonded to each other by an adhesive. That is, an adhesive layer may further be interposed between the metalized films. This structure may be commonly applied to the polymer layer having the aluminum layer metalized thereon.
  • the employment of the metalized films each having the inorganic layer metalized thereon may facilitate relieving of heat bridge at the edge portions of the vacuum insulation material, thereby improving the insulation efficiencies at the edge portions.
  • a vacuum insulation material in accordance with the third exemplary embodiment may include a core material 250 , and a wrapping member 200 for accommodating the core material 250 and having a shape of an envelope formed by thermally bonding outer circumferential portions 220 of a pair of laminate films 210 each including a metalized film, on which the inorganic layer 212 is metalized, respectively.
  • Each of the laminate films 210 may include an outermost layer 213 externally exposed, a barrier layer 215 located beneath the outermost layer 213 and having a metalized film 211 having the inorganic layer 212 metalized thereon, and a thermal bonding layer 214 located beneath the barrier layer 215 and contacting the core material 250 .
  • the laminate film 210 may maintain a vacuum state of the core material 250 and function to protect the core material 250 .
  • the outermost layer 213 may be formed to be exposed to the outer surface of the vacuum insulation material.
  • the thermal bonding layer 214 may be a layer of shielding the inside of the wrapping member 200 , in which the core material 250 is accommodated, by thermally bonding outer circumferential portions of the wrapping member 200 where the core material 250 is not located.
  • the outermost layer and the thermal bonding layer are the same as those described in the first exemplary embodiment, so detailed description thereof will be omitted.
  • the barrier layer 215 may be interposed between the outermost layer 213 and the thermal bonding layer 214 .
  • the barrier layer 215 may include a metalized film 211 , on which the inorganic layer 212 is metalized.
  • the inorganic layer 212 may be laminated by metalizing aluminum on a polymer film through vacuum-Al metalizing.
  • the metalized inorganic layer can be interposed between the outermost layer and the thermal bonding layer of the laminate film to allow for sufficient insulation and moisture shielding even if partially not using the aluminum foil, and also improve insulation efficiencies the outer circumferential portions of the laminate films as the edge portions of the wrapping member, thereby avoiding heat bridge.
  • the polymer film may be made of ethylene vinylalcohol (EVOH) or polyester (PET). Since the EVOH has an alcohol group with strong polarity, it has a high intermolecular force and accordingly can have low oxygen permeability. However, the EVOH is hydrophilic, thus it is sensitive to water.
  • the PET has a relatively good permeability. Also, the PET is excellent in view of moisture vapor permeability and relatively cheap cost, compared to the EVOH.
  • the laminate film may be configured by including two or more metalized films each having an inorganic layer metalized thereon.
  • this specification may not be limited to the structure.
  • a plurality of polymer films may be laminated one another. This structure may allow the vacuum insulation material to be designed suitable for desired water vapor permeability and air permeability.
  • the wrapping member 200 according to the third exemplary embodiment may further include a reinforcing foil on an area 230 excluding the thermally bonded outer circumferential portion 220 .
  • FIG. 10 shows one surface of a pair of laminate films, which form the wrapping member in the shape of envelope.
  • FIG. 10 shows that the outer circumferential portion 220 of the laminate film defines all the side surfaces of the envelope shape, and the central area 230 surrounded by the outer circumferential portion 220 is shown to be distinguishable from the outer circumferential portion 220 .
  • the outer circumferential portion 220 may be formed at each of the pair of laminate films defining both surfaces 210 a and 210 b of the wrapping member 200 in the shape of envelope.
  • An outer circumferential portion of one surface may be thermally bonded to an outer circumferential portion of the other surface into the shape of envelope so as to seal the wrapping member.
  • the reinforcing foil may be an aluminum foil.
  • FIGS. 11 to 13 show variations having such reinforcing foil.
  • the variation shown in FIG. 11 shows that the reinforcing foil is bonded onto the outer surface of the wrapping member.
  • the variation shown in FIG. 12 shows that the reinforcing foil is located inside the laminate film or interposed between the outermost layer and the thermal bonding layer, and
  • FIG. 13 shows that the reinforcing foil is bonded onto an inner surface of the wrapping member.
  • the reinforcing foil 260 is disposed only on the central area 230 surrounded by the outer circumferential portion 220 .
  • the core material 250 may be located within the wrapping member 200 corresponding to the central area 230 .
  • the outer circumferential portion 220 of the wrapping member 200 which is formed by the pair of laminate films, only has the laminate films each including the metalized film having the inorganic layer, without the reinforcing foil. Therefore, the central area 230 where the core material 250 is located can exhibit an excellent insulation efficiency by virtue of existence of the reinforcing foils, which are laminated on the respective upper and lower laminate films.
  • the outer circumferential portion 220 may be allowed to prevent heat bridge, which is generally generated at the outer circumferential portion, by virtue of non-existence of the reinforcing foil.
  • the vacuum insulation material may include a core material, and a wrapping member having a shape of envelope formed by bonding outer circumferential portions of a pair of laminate films, each of which includes a metalized film having an inorganic layer metalized thereon, and accommodating the core material therein.
  • the wrapping member may further include a reinforcing foil located at an overlapped portion between the core material and the wrapping member.
  • the reinforcing foils are present in an overlapped state on both surfaces of the central area 230 , which correspond to the overlapped portion between the core material and the wrapping member, thereby obtaining excellent insulation efficiency.
  • the reinforcing foil is not prevent at the outer circumferential portion 220 , so the vacuum insulation material exhibits an excellent characteristic in view of preventing heat bridge.
  • a vacuum insulation material according to the fourth exemplary embodiment may include a core material, and a wrapping member 300 having a shape of envelope as shown in FIG. 18 , formed by thermally bonding outer circumferential portions 320 of a pair of laminate films 310 each having a metalized film 311 , on which an inorganic layer 312 is metalized, and accommodating the core material therein.
  • each of the laminate films 310 may include an outermost layer 313 externally exposed, a barrier layer 315 located beneath the outermost layer 313 and having a metalized film 311 , on which an inorganic layer 312 is metalized, and a thermal bonding layer 314 located beneath the barrier layer 315 and contacting the core material.
  • the outermost layer 313 may be formed to be exposed to the outer surface of the vacuum insulation material.
  • the thermal bonding layer 314 is a layer of shielding the inside of the wrapping member, in which the core material is accommodated, by thermally bonding an outer circumferential portion of the wrapping member 300 where the core material is not located.
  • the outermost layer and the thermal bonding layer are the same as those described in the first exemplary embodiment, so detailed description thereof will be omitted.
  • a barrier layer 315 may be interposed between the outermost layer 313 and the thermal bonding layer 314 .
  • the barrier layer 315 may include a metalized film 311 , on which the inorganic layer 312 is metalized.
  • the inorganic layer 312 may be laminated by metalizing aluminum on a polymer film through vacuum-Al metalizing.
  • the metalized inorganic layer can be laminated between the outermost layer and the thermal bonding layer of the laminate film to allow for sufficient insulation and moisture shielding even if partially not using the aluminum foil, and simultaneously improve insulation efficiency at the outer circumferential portion of the laminate film as the edge portion of the wrapping member, thereby avoiding heat bridge.
  • the laminate film may include, but not limited to, two or more metalized films each having the inorganic layer metalized.
  • the laminate film may include a plurality of polymer films laminated one another. This structure may allow the vacuum insulation material to be designed suitable for desired water vapor permeability and air permeability.
  • the wrapping member 300 may further include a reinforcing foil 350 coupled to each of the laminate films.
  • outer circumferential portions 320 a , 320 b , 320 c and 320 d of the wrapping member 300 may be provided with a reinforcing foil 350 only on a surface of one of the pair of laminate films 310 a and 310 b.
  • the reinforcing foil 350 may be an aluminum foil.
  • the reinforcing foil 350 may be coupled onto an outer surface of the wrapping member, laminated inside the wrapping member, coupled onto an outer surface of the outermost layer, or interposed between the outermost layer and the thermal bonding layer.
  • FIGS. 16 and 17 show that the reinforcing foil is disposed on a plane, which show in more detail the configuration that outer circumferential portions of the wrapping member may be provided with a reinforcing foil only on a surface of one of the pair of laminate films.
  • the pair of laminate films may include a first surface 310 a defined as an upper surface and a second surface 310 b defined as a lower surface.
  • the reinforcing foil 350 may be disposed only on a left outer circumferential portion 320 b and a right outer circumferential portion 320 d of the second surface 310 b.
  • the outer circumferential portions 320 a , 320 b , 320 c and 320 d are formed in the order of a counterclockwise direction to be bonded to outer circumferential portions of the other surface through thermal bonding, thereby sealing the wrapping member in the shape of envelope.
  • the outer circumferential portions 320 a and 320 c corresponding to the upper side surface and the lower side surface are reinforced by the reinforcing foil 350 .
  • the outer circumferential portions 320 b and 320 d corresponding to the left and right side surfaces are not provided with the reinforcing foil 350 .
  • the outer circumferential portions 320 b and 320 d corresponding to the left and right side surfaces are reinforced by the reinforcing foil 350 but the outer circumferential portions 320 a and 320 c corresponding to the upper and lower side surfaces are not provided with the reinforcing foil 350 .
  • an envelope in the shape shown in FIG. 18 when completely forming the envelope shape by thermally bonding the upper and lower surfaces, an envelope in the shape shown in FIG. 18 is obtained.
  • both surfaces of the central area surrounded by the outer circumferential portions are reinforced by the reinforcing foils 350 .
  • the reinforcing foil is not present on any of both surfaces, and only one surface or none is provided with the reinforcing foil.
  • outer circumferential portions may be folded by a predetermined interval, so as to facilitate mounting of the vacuum insulation material, which may however cause heat bridge.
  • the laminate films having the reinforcing foils may not be exposed to the exterior by virtue of the respectively folded outer circumferential portions 320 a , 320 b , 320 c and 320 d of the side surfaces.
  • an outer circumferential portion having the reinforcing foil at only one surface may be wrapped by the other surface without the reinforcing foil. That is, the upper and lower outer circumferential portions, referring to FIG. 18 , are folded toward the laminate film (i.e., toward the first surface) having the reinforcing foil on the outer circumferential portions, namely, folded in an outgoing direction based on line F on the planar surface. In addition, still referring to FIG. 18 , the left and right outer circumferential portions are folded toward the laminate film (i.e., toward the second surface) having the reinforcing foil on the outer circumferential portions, namely, folded in an incoming direction based on line E on the planar surface. Consequently, the outside of at least the folded portions of the laminate film having the reinforcing foil may all be wrapped by the laminate film without the reinforcing foil.
  • one of the two laminate films forming the wrapping member is not provided with the reinforcing foil and the laminate film without the reinforcing foil wraps the laminate film with the reinforcing foil, thereby avoiding heat bridge generated at the outer circumferential portions as much as possible.
  • the pair of laminate films may include a first surface 310 a defined as an upper surface and a second surface 310 b defined as a lower surface.
  • the reinforcing foil 350 may be disposed only on an upper outer circumferential portion 320 a and a lower outer circumferential portion 320 c of the second surface 310 b.
  • the upper and lower outer circumferential portions are folded toward the laminate film (i.e., toward the second surface) having the reinforcing foil at the outer circumferential portions, namely, folded in an incoming direction based on line F on the same level.
  • the left and right outer circumferential portions are folded toward the laminate film (i.e., toward the first surface) having the reinforcing foil at the outer circumferential portions, namely, folded in an outgoing direction based on line E on the same level. Consequently, the outside of at least the folded portions of the laminate film having the reinforcing foil may all be wrapped by the laminate film without the reinforcing foil.
  • one of the two laminate films forming the wrapping member is not provided with the reinforcing foil and the laminate film without the reinforcing foil wraps the laminate film with the reinforcing foil, thereby avoiding heat bridge generated at the outer circumferential portions as much as possible.
  • the fourth exemplary embodiment may not be limited to those examples. That is, although both surfaces of the central portion surrounded by the outer circumferential portions are all reinforced by the reinforcing foils, if the reinforcing foil is provided on one or none of both surfaces on the outer circumferential portions 320 a , 320 b , 320 c and 320 d defining each side surface of the envelope shape, it may be a variation of the exemplary embodiment. For example, it may be configured to form reinforcing foils on upper and left outer circumferential portions of a first surface and lower and right outer circumferential portions of a second surface. Even in this case, similar to the foregoing exemplary embodiments, the heat bridge generated at the outer circumferential portions can be avoided as much as possible and simultaneously the insulation efficiency at the central area can be excellent.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Insulation (AREA)
  • Laminated Bodies (AREA)
US13/805,253 2010-08-23 2011-08-19 Vacuum insulation material Abandoned US20130101779A1 (en)

Applications Claiming Priority (7)

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KR1020100081672A KR20120021948A (ko) 2010-08-23 2010-08-23 냉장고용 진공단열재
KR10-2010-0081672 2010-08-23
KR1020100094789A KR20120033168A (ko) 2010-09-29 2010-09-29 냉장고용 진공단열재
KR1020100094788A KR20120033167A (ko) 2010-09-29 2010-09-29 냉장고용 진공단열재
KR10-2010-0094788 2010-09-29
KR10-2010-0094789 2010-09-29
PCT/KR2011/006131 WO2012026715A2 (fr) 2010-08-23 2011-08-19 Matériau d'isolation sous vide

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US (1) US20130101779A1 (fr)
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150241118A1 (en) * 2014-02-24 2015-08-27 Whirlpool Corporation Multi-section core vacuum insulation panels with hybrid barrier film envelope
CN104924694A (zh) * 2014-03-21 2015-09-23 三星电子株式会社 气体阻隔膜、具有其的制冷器及制造气体阻隔膜的方法
US20180079163A1 (en) * 2015-04-14 2018-03-22 Kingspan Holdings (Irl) Limited Vacuum insulation panel and process of manufacture
US10619912B2 (en) 2015-12-28 2020-04-14 Whirlpool Corporation Multi-layer gas barrier materials for vacuum insulated structure

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US9182158B2 (en) 2013-03-15 2015-11-10 Whirlpool Corporation Dual cooling systems to minimize off-cycle migration loss in refrigerators with a vacuum insulated structure
US9221210B2 (en) 2012-04-11 2015-12-29 Whirlpool Corporation Method to create vacuum insulated cabinets for refrigerators
US8944541B2 (en) 2012-04-02 2015-02-03 Whirlpool Corporation Vacuum panel cabinet structure for a refrigerator
US8978342B2 (en) 2012-06-15 2015-03-17 Auburn University Residential radiant barrier assemblies
JP2014126098A (ja) * 2012-12-26 2014-07-07 Nippon Synthetic Chem Ind Co Ltd:The 真空断熱構造体及び真空断熱構造体用外装袋
US9599392B2 (en) 2014-02-24 2017-03-21 Whirlpool Corporation Folding approach to create a 3D vacuum insulated door from 2D flat vacuum insulation panels
US10052819B2 (en) 2014-02-24 2018-08-21 Whirlpool Corporation Vacuum packaged 3D vacuum insulated door structure and method therefor using a tooling fixture
US9476633B2 (en) 2015-03-02 2016-10-25 Whirlpool Corporation 3D vacuum panel and a folding approach to create the 3D vacuum panel from a 2D vacuum panel of non-uniform thickness
US10161669B2 (en) 2015-03-05 2018-12-25 Whirlpool Corporation Attachment arrangement for vacuum insulated door
US9897370B2 (en) 2015-03-11 2018-02-20 Whirlpool Corporation Self-contained pantry box system for insertion into an appliance
US9441779B1 (en) 2015-07-01 2016-09-13 Whirlpool Corporation Split hybrid insulation structure for an appliance
US11052579B2 (en) 2015-12-08 2021-07-06 Whirlpool Corporation Method for preparing a densified insulation material for use in appliance insulated structure
US10222116B2 (en) 2015-12-08 2019-03-05 Whirlpool Corporation Method and apparatus for forming a vacuum insulated structure for an appliance having a pressing mechanism incorporated within an insulation delivery system
US10429125B2 (en) 2015-12-08 2019-10-01 Whirlpool Corporation Insulation structure for an appliance having a uniformly mixed multi-component insulation material, and a method for even distribution of material combinations therein
US10422573B2 (en) 2015-12-08 2019-09-24 Whirlpool Corporation Insulation structure for an appliance having a uniformly mixed multi-component insulation material, and a method for even distribution of material combinations therein
US10041724B2 (en) 2015-12-08 2018-08-07 Whirlpool Corporation Methods for dispensing and compacting insulation materials into a vacuum sealed structure
US10422569B2 (en) 2015-12-21 2019-09-24 Whirlpool Corporation Vacuum insulated door construction
US9752818B2 (en) 2015-12-22 2017-09-05 Whirlpool Corporation Umbilical for pass through in vacuum insulated refrigerator structures
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US10610985B2 (en) 2015-12-28 2020-04-07 Whirlpool Corporation Multilayer barrier materials with PVD or plasma coating for vacuum insulated structure
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US10030905B2 (en) 2015-12-29 2018-07-24 Whirlpool Corporation Method of fabricating a vacuum insulated appliance structure
US11247369B2 (en) 2015-12-30 2022-02-15 Whirlpool Corporation Method of fabricating 3D vacuum insulated refrigerator structure having core material
WO2017180145A1 (fr) 2016-04-15 2017-10-19 Whirlpool Corporation Structure de réfrigérateur à isolation sous vide, dotée de caractéristiques tridimensionnelles
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EP3500804B1 (fr) 2016-08-18 2022-06-22 Whirlpool Corporation Armoire de réfrigérateur
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WO2018101954A1 (fr) 2016-12-02 2018-06-07 Whirlpool Corporation Ensemble support de charnière
US10907888B2 (en) 2018-06-25 2021-02-02 Whirlpool Corporation Hybrid pigmented hot stitched color liner system
US10907891B2 (en) 2019-02-18 2021-02-02 Whirlpool Corporation Trim breaker for a structural cabinet that incorporates a structural glass contact surface
WO2023188770A1 (fr) * 2022-03-30 2023-10-05 パナソニックＩｐマネジメント株式会社 Matériau d'isolation thermique sous vide

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5018328A (en) * 1989-12-18 1991-05-28 Whirlpool Corporation Multi-compartment vacuum insulation panels
US5091233A (en) * 1989-12-18 1992-02-25 Whirlpool Corporation Getter structure for vacuum insulation panels
US5270092A (en) * 1991-08-08 1993-12-14 The Regents, University Of California Gas filled panel insulation
US5376424A (en) * 1991-10-02 1994-12-27 Fujimori Kogyo Co., Ltd. Vacuum thermal insulating panel and method for preparing same
US5491009A (en) * 1990-08-03 1996-02-13 W. R. Grace & Co.-Conn. Amorphous nylon composition and films
US6931204B2 (en) * 1999-06-30 2005-08-16 Matsushita Electric Industrial Co., Ltd. Vacuum heat insulator, hot insulating device using vacuum heat insulator, and electric water heater
US20060062995A1 (en) * 2003-05-16 2006-03-23 Toppan Printing Co., Ltd. Transparent gas barrier laminated film, and electroluminescent light-emitting element, electroluminescent display device, and electrophoretic display panel using the same
US20080280090A1 (en) * 2005-11-22 2008-11-13 Kyung-Do Kim Vaccum Insulation Panal And Insulation Structure Of Refrigerator Using The Same
US20080286515A1 (en) * 2005-10-18 2008-11-20 Dong-Ju Jung Vacuum Insulation Panel and Insulation Structure of Refrigerator Applying the Same
US20090001086A1 (en) * 2007-04-12 2009-01-01 Nanopore, Inc. Container insert incorporating thermally insulative panels
US7537817B2 (en) * 2003-04-18 2009-05-26 Panasonic Corporation Vacuum heat insulator and apparatuses using the same
US20090169897A1 (en) * 2007-12-27 2009-07-02 Yuya Agata Barrier laminate, barrier film substrate, device and optical component

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3580837D1 (de) * 1984-12-04 1991-01-17 Nippon Oxygen Co Ltd Vakuumwaermeisolierungselement.
JPH08159377A (ja) * 1994-12-02 1996-06-21 Matsushita Refrig Co Ltd 真空断熱体
KR20030072717A (ko) * 2002-03-06 2003-09-19 삼성전자주식회사 진공단열재 판넬 및 그의 제조방법
JP3914908B2 (ja) * 2003-09-29 2007-05-16 日立アプライアンス株式会社 真空断熱材
JP2006084077A (ja) * 2004-09-15 2006-03-30 Hitachi Home & Life Solutions Inc 真空断熱材、及び真空断熱材を用いた冷蔵庫

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5091233A (en) * 1989-12-18 1992-02-25 Whirlpool Corporation Getter structure for vacuum insulation panels
US5018328A (en) * 1989-12-18 1991-05-28 Whirlpool Corporation Multi-compartment vacuum insulation panels
US5491009A (en) * 1990-08-03 1996-02-13 W. R. Grace & Co.-Conn. Amorphous nylon composition and films
US5270092A (en) * 1991-08-08 1993-12-14 The Regents, University Of California Gas filled panel insulation
US5376424A (en) * 1991-10-02 1994-12-27 Fujimori Kogyo Co., Ltd. Vacuum thermal insulating panel and method for preparing same
US6931204B2 (en) * 1999-06-30 2005-08-16 Matsushita Electric Industrial Co., Ltd. Vacuum heat insulator, hot insulating device using vacuum heat insulator, and electric water heater
US20060141205A1 (en) * 1999-06-30 2006-06-29 Matsushita Electric Industrial Co., Ltd. Vacuum heat insulator, hot insulating device using vacuum heat insulator, and electric water heater
US7537817B2 (en) * 2003-04-18 2009-05-26 Panasonic Corporation Vacuum heat insulator and apparatuses using the same
US20060062995A1 (en) * 2003-05-16 2006-03-23 Toppan Printing Co., Ltd. Transparent gas barrier laminated film, and electroluminescent light-emitting element, electroluminescent display device, and electrophoretic display panel using the same
US20080286515A1 (en) * 2005-10-18 2008-11-20 Dong-Ju Jung Vacuum Insulation Panel and Insulation Structure of Refrigerator Applying the Same
US20080280090A1 (en) * 2005-11-22 2008-11-13 Kyung-Do Kim Vaccum Insulation Panal And Insulation Structure Of Refrigerator Using The Same
US20090001086A1 (en) * 2007-04-12 2009-01-01 Nanopore, Inc. Container insert incorporating thermally insulative panels
US20090169897A1 (en) * 2007-12-27 2009-07-02 Yuya Agata Barrier laminate, barrier film substrate, device and optical component

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150241118A1 (en) * 2014-02-24 2015-08-27 Whirlpool Corporation Multi-section core vacuum insulation panels with hybrid barrier film envelope
US9689604B2 (en) * 2014-02-24 2017-06-27 Whirlpool Corporation Multi-section core vacuum insulation panels with hybrid barrier film envelope
CN104924694A (zh) * 2014-03-21 2015-09-23 三星电子株式会社 气体阻隔膜、具有其的制冷器及制造气体阻隔膜的方法
US20150267959A1 (en) * 2014-03-21 2015-09-24 Samsung Electronics Co., Ltd. Gas barrier film, refrigerator having the same and method of manufacturing gas barrier film
US20180079163A1 (en) * 2015-04-14 2018-03-22 Kingspan Holdings (Irl) Limited Vacuum insulation panel and process of manufacture
US10619912B2 (en) 2015-12-28 2020-04-14 Whirlpool Corporation Multi-layer gas barrier materials for vacuum insulated structure

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